138177284 has 24 divisors (see below), whose sum is σ = 288371328. Its totient is φ = 56643840.

The previous prime is 138177283. The next prime is 138177301. The reversal of 138177284 is 482771831.

It is not an unprimeable number, because it can be changed into a prime (138177283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106637 + ... + 107924.

It is an arithmetic number, because the mean of its divisors is an integer number (12015472).

Almost surely, 2^138177284 is an apocalyptic number.

138177284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138177284 is an abundant number, since it is smaller than the sum of its proper divisors (150194044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138177284 is a wasteful number, since it uses less digits than its factorization.

138177284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214595 (or 214593 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 138177284 is about 11754.8834107362. The cubic root of 138177284 is about 516.9861207672.

The spelling of 138177284 in words is "one hundred thirty-eight million, one hundred seventy-seven thousand, two hundred eighty-four".